CVE-2025-3515 Scanner

The Drag and Drop Multiple File Upload for Contact Form 7 is a WordPress plugin used primarily to enhance the file uploading capabilities of the Contact Form 7 plugin. It is widely used by developers and site administrators to facilitate seamless file uploads by users. This plugin simplifies uploading multiple files through a drag and drop interface. Being popular among WordPress users, it is especially useful for websites requiring user-generated content submissions or contact forms. The plugin is designed to allow customizable file handling, fitting a variety of WordPress site configurations. Its functionality is key for many WordPress-driven sites that depend on user interaction and file exchanges.

The vulnerability present in the Drag and Drop Multiple File Upload for Contact Form 7 plugin is Arbitrary File Upload, which stems from insufficient file type validation. This security flaw permits unauthenticated attackers to upload potentially harmful files, such as .phar files. Such vulnerabilities present a risk of remote code execution if servers are not configured properly to handle such file types. It represents a critical entry point for attackers to exploit server configurations that interpret these files as executable scripts. The absence of stringent validation measures creates an opening that hackers can exploit, especially in standard server setups.

Technically, the vulnerability arises due to a failure in the plugin's file upload process, particularly bypassing the blacklist implemented. Attackers can misuse this feature by uploading .phar file types, which can lead to execution if improperly handled by the server environment. The issue arises because the plugin does not enforce adequate restrictions on file types, allowing the upload of dangerous file formats easily. This flaw is exacerbated in environments using the default Apache+mod_php configuration, where file extension checks are not rigorously enforced. It is triggered by sending a POST request to the plugin, exploiting the lack of comprehensive security checks.

Exploitation of this vulnerability could lead to significant security breaches, including the execution of malicious code on the server. The potential consequences encompass unauthorized access to server resources, data breaches, and further compromise through uploaded malware. Servers may become a vector for attackers to distribute other forms of malware or conduct phishing attacks. Websites affected by this vulnerability may suffer from performance issues or defacement due to the altered codebase. Ultimately, exploiting this flaw can lead to a complete compromise of site integrity and control for malicious actors.

REFERENCES

• https://nvd.nist.gov/vuln/detail/CVE-2025-3515
• https://plugins.trac.wordpress.org/changeset/3310153/
• https://www.wordfence.com/threat-intel/vulnerabilities/id/e1298242-61d2-495e-bae7-96b5e12bd03d